Operating System and Networking Concepts
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Questions and Answers

What is the primary characteristic of a Wide Area Network (WAN)?

  • Extends over a large geographical area (correct)
  • Operates within a single building
  • Covers a small geographical area
  • Uses only fiber optic cables

    • Which of the following best describes a Local Area Network (LAN)?

  • Has a high maintenance cost
  • Covers several countries
  • Limited to areas such as homes or offices (correct)
  • Requires complex setup and configuration

    • What is one of the main advantages of a Local Area Network (LAN)?

  • It covers large distances easily
  • Hardware and maintenance costs are low (correct)
  • It has a very slow data transmission rate
  • Setup is typically complex and expensive

    • Which communication medium is typically used for a WAN?

    <p>Telephone networks or satellite links</p> Signup and view all the answers

    What geographical scope does a Metropolitan Area Network (MAN) cover?

    <p>Larger than a LAN but smaller than a WAN</p> Signup and view all the answers

    What is a unique feature of Peer-to-Peer architecture in networking?

    <p>Any peer can communicate directly with another peer</p> Signup and view all the answers

    Which of the following statements about WANs is true?

    <p>They can connect multiple LANs together</p> Signup and view all the answers

    Which factor contributes to higher error and noise levels in WAN transmissions?

    <p>Long distance transmission</p> Signup and view all the answers

    What characterizes GNU/Linux as an operating system?

    <p>It is an open-source, multi-user operating system.</p> Signup and view all the answers

    Which of the following statements about open-source software is true?

    <p>Users can view and modify the code.</p> Signup and view all the answers

    Which mobile operating system is classified as closed source?

    <p>iOS</p> Signup and view all the answers

    What is the primary user interface feature in graphical user interfaces (GUIs)?

    <p>Users access programs through images, icons, and dialog boxes.</p> Signup and view all the answers

    Which of the following is the most popular distribution of GNU/Linux?

    <p>Ubuntu</p> Signup and view all the answers

    What is a key advantage of using open source software?

    <p>It allows users to fix problems and add features.</p> Signup and view all the answers

    As of 2018, which statement is true regarding the world’s fastest computers?

    <p>All of them run on GNU/Linux.</p> Signup and view all the answers

    What distinguishes the command line interface (CLI) from the graphical user interface (GUI)?

    <p>CLI requires text commands to interact with the system.</p> Signup and view all the answers

    What is the purpose of the command 'whoami' in a terminal?

    <p>Displays the name of the current user</p> Signup and view all the answers

    Which protocol is used for transferring files over the internet?

    <p>FTP</p> Signup and view all the answers

    What does the abbreviation GUI stand for?

    <p>Graphical User Interface</p> Signup and view all the answers

    What is the full form of LAN?

    <p>Local Area Network</p> Signup and view all the answers

    Which of the following commands is used to print the working directory?

    <p>pwd</p> Signup and view all the answers

    Which type of memory is affected by a power failure while typing a letter?

    <p>Random Access Memory</p> Signup and view all the answers

    What is the difference between Data and Information?

    <p>Data is raw facts; Information is processed data.</p> Signup and view all the answers

    Which of the following best describes how Linux differs from Windows?

    <p>Linux is an open-source operating system; Windows is not.</p> Signup and view all the answers

    What is one of the key skills necessary for a games developer?

    <p>Creativity and imagination</p> Signup and view all the answers

    Which software is commonly used by animators to create their work?

    <p>GIMP</p> Signup and view all the answers

    What does Data Analytics (DA) primarily involve?

    <p>Examining data sets to draw conclusions</p> Signup and view all the answers

    What is required to be effective in a career as a Cyber Advisor?

    <p>Basic IT knowledge</p> Signup and view all the answers

    What does Cloud Computing primarily deliver?

    <p>Computing services over the internet</p> Signup and view all the answers

    Which role requires knowledge in tools like Kdenlive and Audacity?

    <p>Audio / Video Editor</p> Signup and view all the answers

    What aspect is most crucial for success as a Professional Accountant?

    <p>Using computerized accounting software</p> Signup and view all the answers

    What type of systems does ERP (Enterprise Resource Planning) focus on?

    <p>Integrating various business processes</p> Signup and view all the answers

    What is the primary focus of green computing?

    <p>Environmental sustainability in IT practices</p> Signup and view all the answers

    What does the Internet of Things (IoT) primarily enable?

    <p>Physical devices to communicate over the internet</p> Signup and view all the answers

    Which statement best describes artificial intelligence (AI)?

    <p>It is the intelligence demonstrated by machines to perceive and act.</p> Signup and view all the answers

    What is the goal of machine learning (ML)?

    <p>To develop algorithms for statistical modeling and forecasting.</p> Signup and view all the answers

    Which of the following is a characteristic of big data?

    <p>Data sets that are large, complex, and require advanced processing.</p> Signup and view all the answers

    What is one of the main goals of green computing?

    <p>To recycle or ensure biodegradation of non-functional products.</p> Signup and view all the answers

    How does machine learning typically function?

    <p>By using algorithms to analyze patterns and data.</p> Signup and view all the answers

    Which technology plays a critical role in enabling data analytics?

    <p>Artificial intelligence techniques and systems.</p> Signup and view all the answers

    Study Notes

    Operating System Concepts

    • Whoami Command: Displays the current user's name.
    • pwd Command: Shows the present working directory.
    • ls Command: Lists the files and directories within the current directory.
    • CD Command (Change Directory): Used to change the current directory.
    • FTP (File Transfer Protocol): Protocol for transferring files over the Internet.
    • DNS (Domain Name System): Translates domain names into IP addresses.

    Networking Types

    • Local Area Network (LAN):
      • Covers smaller geographical areas like offices, homes, or schools.
      • Fast data transmission, limited distance, and lower maintenance costs.
    • Metropolitan Area Network (MAN):
      • Larger than LAN but smaller than WAN, connects separate computers in a city.
    • Wide Area Network (WAN):
      • Extensive geographical range, connects multiple LANs, and often uses telephone lines or satellite links.

    Mobile Operating Systems

    • Android:
      • Free and open-source, popular among mobile devices, developed by Google.
    • Asha: Closed-source OS used by Nokia.
    • Blackberry: Closed-source OS for smartphones and tablets.
    • iOS & Windows Phone: Other examples of mobile operating systems.

    User Interfaces

    • Graphical User Interface (GUI): User interacts with graphical elements like icons and images.
    • Command Line Interface (CLI): User interacts through text commands.

    Linux and Open Source

    • Linux is an open-source, multi-user operating system that allows users to modify source code.
    • GNU/Linux is crucial in internet infrastructure, powering many servers and supercomputers globally.

    Computer System Functional Units

    • Storage Unit: Includes primary memory types (RAM, ROM), responsible for data storage.
    • Data vs. Information:
      • Data: Raw facts (e.g., numbers, names).
      • Information: Processed data, offering meaning (e.g., a report generated from sales data).
    • Green Computing: Emphasizes environmentally sustainable practices in IT and computing.
    • Internet of Things (IoT): Interconnected devices that collect and exchange data.
    • Artificial Intelligence (AI): Machine intelligence simulating human cognitive functions.
    • Machine Learning (ML): Algorithms that enable systems to learn from data patterns.
    • Big Data: Large and complex data sets analyzed for insights.

    Career Opportunities in IT

    • Professional Accountant: Uses software for financial management.
    • Animator: Leverages creativity and tools for animation production.
    • Game Developer: Designs and develops video games across various platforms.
    • Audio/Video Editor: Edits audio and video content using specific software tools.

    Network Architecture

    • Peer-to-Peer Architecture: All machines communicate directly without a dedicated server.
    • Client/Server Architecture: Design where clients request resources, and servers provide them.

    Data Handling in IT

    • Data Analytics (DA): Process of analyzing datasets to derive actionable insights.

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    Description

    This quiz explores fundamental concepts related to operating systems and various networking types, including commands like 'whoami' and 'pwd', as well as different network architectures such as LAN, MAN, and WAN. Test your knowledge of essential protocols and their functions in computing environments.

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